Warp-frame.



' F. E. WIRTH.

WARP FRAMEx PPLIGATION FILED SEPT 8,1914

Patented Mar. 30, 1915.

2 SHEETS-SHEET 1.

F. E. WIRTH.

WARP FRAME. APPLICATION FILED' SEPT. 8, 1914.

Patented Mar. 30, 1915.

2 SHEETS-SHEET 2.

UNITED STATES PATENT @FFIQE FRIEDRICH EMIL OF SCI-IUBERT NITZ, GERMANY.

WIRTH, 0F HARTMANN DORF, GERMANY, ASSIGNGR T0 86 SALZER MASCHINENFABRIK, AKIIENGESELLSCI-IAFT, 0F CHEM- WARP-FRAME.

Specification of Letters Patent.

Patented Mar. 30, 19115.

Application filed September 8, 1914. Serial No. 860,624.

To all whom it may concern: Be it known that I, FRIEDRICH EMIL IRTH, a citizen of the German Empire, residing at Hartmannsdorf, in the Kingdom of Saxony, Germany, have invented certain new and useful Improvements in Warp- Frames; and I do hereby declare the following to be a full, clear, and exact description of th h as will enable others art to which it appertains to make and use the same, reference being had he accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

y invention relates to improvements in warp frames, and more particularly in warp rames in which a pair of inclined or horizontal needle bars are provided in combination with two sinker bars located between the needle bars such as are used for makin a double faced work provided with two right surfaces. Goods of this class are used as substitutes for danish kid.

One of the objects of the improvements is to provide a frame of this cl obtained as compared to frames in which the sinkers and their throats can lock in only the loops of one needle bar.

on the needles under the needle hooks, and after the needle points have entered the old lo perform a rocking movement, are enabled to engage with the outer faces of the nibs the old rows of loops of their own needle bar for knocking the work over. For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawings,

in which the same letters of reference have been used in all the views to indicate corresponding parts.

In said drawings Figures 1 to 10, are diagrammatical views showing the needle d row of loops.

The mechanism for operating the various parts shown in the figures may be constructed substantially in the same way as in molwn machines or in any preferred way.

uc selves to those skilled so that it is not necessary to describe an example in dethe essence of the invention residing in the parts shown in the figures and in the operation of the same.

etween the needle bars a and 6 disposed relatively to each other of 5 degrees a which are at an angle pair of sinker bars 0 and d are mounted opposite to each other, as is known in the art.

If the needle bars perform alternately reciprocating movements clined paths, the sinker bars also perform alternately a rocking substantially circular movement apart from the upward and downward movements.

The method of knitting described hereafter with reference to one side of the frame, reference being had to the figures which show the mechanisms in their different positions.

Fig. 1 shows the right hand needle bar 6 whic sinker (Z in their lowermost or inoperative positions. The left hand needle bar a is in its operative position, and also the sinker bar 0 the sinkers e of which have the last rows of loops of the needles n and the new rows of loops of the needles m locked in their throats. The guide bars 7t are in their medial positions and the presser bars 0 and 72 in their inoperative positions. For the present the needle bar a remains in the position shown in the figure, but the guide bars in are rocked to the right and into the position shoWn in Fig. 2, throw the warp threads hung thereon between the needles n,

a row of loops is and while the needle bar 6 and are shifted below the needle row longitudinally and in opposite directions a distance corresponding to two or three consecutive teeth. Thereupon the guide bars h are rocked between the needles n to the left and into the positions shown in Fig. 3 and they are shifted above the needle row in the direction of the movement of each guide bar the distance of two consecutive teeth, so that two guide bars cross each other above each needle, two guide bars being shown in the present example. Thereupon the guide bars h are rocked between the needles a to the right and into the position shown in Fig. 4:, and they place the war; threads on the hooks of the needles n in front of the nibs g of the sinkers e. Now all the guide bars it remain in the positions which they have thus assumed, and the needle bar a moves in the direction of the arrow a and into its uppermost position shown in Fig. 5, the warp threads located on the hooks of the needles 7:. getting on the stems of the said needles. Now the needle bar a is returned into initial position, as is shown in Fig. 6, and the warp threads located on the needle stems are brought by the nibs g of the sinkers e in position below the hooks of the needles at and the presser bar 0 is thrown into operation so as to press off the hook of each needle, in order that during the further return'movement of the needle bar a the points of the needles can get into the oldloops of the same needle row a which are still locked in by the sinker throats. After the needle points have entered into the old loops, the needles n and the presser bar 0 remain in the ositions which they have thereby assumed, and the sinkers e perform a substantially circular movement in the direction of the arrow 0 shown in Fig. 7. Thereby they look up the two rows of loops which have so far been held in their throats and place themselves immediately with their nibs at the rear of the old row of loops located on the points of the needles, as is shown in Fig. 8.

As the needle bar a continues its return movement in the direction opposite to the arrow or shown in Fig. 5 and the sinkers e are simultaneously moved in the direction 0 the arrow u, the old loops are not only landed by the upper sides of the sinker nibs on the hooks of the needles 1, but they are also knocked over by the latter over the loops which have been formed (Fig. 9), which loops form a new row of loops. Shortly before the rows of loops have been knocked over the presser bar 0 is returned into inoperative position, and the new row of located at the left has been locked in by the right hand row of sinkers 7 together with the left hand one immediately after the lattter has been knocked over, see Fig. 10, gets into operaoppositely arranged needle bars,

loopstive position, the needle ,bar a and the sinker bar 0 have returned into inoperative position, while the guide bars it have assumed their medial positions.

The operation which has thus been described is now performed in the same way with-reference to the formation of the right hand row of loops, so that it isnot necessary to repeat the descript on of the operation with reference to the right hand side of the frame. The description of the operation shows, that not only the row of loops'of the needle bars which are just entering into operation are locked in by the operative row of sinkers, but'always the rows of loops of both rows of needles, and that a new row 0 loops is formed only on the needle bar which is ust in operation. Thereby it is possible to do the work without any take up, and to obtain a product which is perfectly uniform.

I claim herein as my. invention:

1. In a warp frame, the combination with oppositely arranged needle bars, and the needles mounted thereon, of a pair of guide bars, a pair of sinker bars and the sinkers mounted thereon located between said needle bars, the sinkers being bent rearward at their upper ends and away from the cooperating needle ends to such an extent, that the throats provided between the sinker stems and sinker nibs are adapted to lock in not only the row of loops of their own needle bar but simultaneously those of the opposite needle bar.

2. In a warp frame, the combination with oppositely arranged needle bars, and the needles mounted thereon, of a pair of guide bars, a pair of sinker bars and the sinkers mounted thereon located between said needle bars, the sinkers being bent rearward at their upper ends and away from the cooperating needle ends to such an extent, that the throats provided between the sinker stems and sinker nibs are adaptedto lock'in not only, the row of loops of their own needle bar but simultaneously those of the opposite needle bar, the sinker bars being adapted to perform with reference to the cooperating needle bars not only the locking in and knocking over of the old loops but also the landing of the warp threads placed on the needles. V

3. In a warp frame, the combination with and the needles mounted thereon, of a pair of guide bars, a pair of sinker bars and the sinkers mounted thereon located between said needle bars, ward at'their upper ends and away from the cooperating needle ends to such an extent, that the throats provided between the sinker stems and sinker nibs are adapted to lock in not only the row of loops of their own needle bar but simultaneously those of the opposite needle bar,

the sinkers being bent rearmeans operative 1 after the needle points have entered into my invention, I have signed by name in the old loops to impart swinging movements presence of the subscribing Witnesses.

to the slnkers and to place the same With the FRIEDRICH EMIL WIRTH. outer faces of their nibs into position for Witnesses: engagement With the old row of loops of EMIL EDWARD KUTZSEIILESUH,

eir own needle bar for lmocking over the ERNST ALBERT CONRAD, Work. 7 TEGER,

In testimony that I claim the foregoing as W. H. MfiCKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

